Hair dryer



FIG. 1 is a front view of a hair dryer showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top-right-front perspective view thereof.

The broken lines showing a portion of the hair dryer form no part of the claimed design. 

CLAIM The ornamental design for a hair dryer, as shown and described. 